public-apis

A collective list of free APIs

Hoppscotch

Open source API development ecosystem

JSON Crack

Visualize JSON into interactive graphs

httpie/cli

modern, user-friendly command-line HTTP client for the API era. JSON support, colors, sessions, downloads, plugins & more.

usebruno.com

Re-Inventing the API Client

mountain-loop/yaak

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬 |

Insomnia

The Collaborative API Development Platform

Reqable

API抓包调试 + API测试一站式工具